Kamasutra

"Kamasutra, (also Kama Sutra), is an ancient Indian text widely considered to be the standard work on love in Sanskrit literature. It is said to be authored by Mallanaga Vatsyayana. A portion of the work deals with human sexual behavior.The Kama Sutra is most notable of a group of texts known generically as Kama Shastra (Sanskrit: Kāma Śāstra). Traditionally, the first transmission of Kama Shastra or ""Discipline of Kama"" is attributed to Nandi the sacred bull, Shiva's doorkeeper, who was moved to sacred utterance by overhearing the lovemaking of the god and his wife Parvati and later recorded his utterances for the benefit of mankind.Historian John Keay says that the Kama Sutra is a compendium that was collected into its present form in the second century CE"